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O'Danielite

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Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
© Brent Thorne

Show O'Danielite Photos (2)
Formula:
Na(Zn,Mg)
 
3
H
 
2
(AsO
 
4
)
 
3


Alluaudite Group.

Classification of O'Danielite

IMA status:Approved
Dana 7th edition ID:38.2.7.1
Hey's CIM Ref.:20.3.13

20 : Arsenates (also arsenates with phosphate, but without other anions)
3 : Arsenates of Zn, Cd or Hg
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Type Occurrence of O'Danielite

Type Locality:Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia

Optical Data of O'Danielite

Type:Biaxial (+)
RI values: nα = 1.745 nβ = 1.753 nγ = 1.778
2V:Measured: 60° , Calculated: 60°
Maximum Birefringence:δ = 0.033

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v moderate

Chemical Properties of O'Danielite

Formula:
Na(Zn,Mg)
 
3
H
 
2
(AsO
 
4
)
 
3
Essential elements:As, H, Na, O, Zn
All elements listed in formula:As, H, Mg, Na, O, Zn

Relationship of O'Danielite to other Species

Related Minerals - Hey's Index Grouping:
20.3.1Adamite
Zn
 
2
(AsO
 
4
)(OH)
20.3.2Paradamite
Zn
 
2
[OH|AsO
 
4
]
20.3.3Koritnigite
Zn[HAsO
 
4
] · H
 
2
O
20.3.4Legrandite
Zn
 
2
[OH|AsO
 
4
] · H
 
2
O
20.3.5Warikahnite
Zn
 
3
(AsO
 
4
)
 
2
·2H
 
2
O
20.3.6Köttigite
Zn
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
20.3.7Stranskiite
(Zn,Cu)
 
3
[AsO
 
4
]
 
2
20.3.8Philipsburgite
(Cu,Zn)
 
6
[(OH)
 
3
|(AsO
 
4
,PO
 
4
)]
 
2
 · H
 
2
O
20.3.9Austinite
CaZn[OH|AsO
 
4
]
20.3.10Prosperite
CaZn
 
2
[OH|HAsO
 
4
|AsO
 
4
]
20.3.11Gaitite
Ca
 
2
Zn[AsO
 
4
]
 
2
 · 2H
 
2
O
20.3.12Zincroselite
Ca
 
2
Zn[AsO
 
4
]
 
2
 · 2H
 
2
O
20.3.14Johillerite
Na(Mg,Zn)
 
3
Cu[AsO
 
4
]
 
3
20.3.15Holdenite
(Mn
2+
 
,Mg)
 
6
Zn
 
3
[(OH)
 
8
|(AsO
 
4
)
 
2
|SiO
 
4
]
20.3.16Chudobaite
(Na,K)(Mg,Zn)
 
2
H(AsO
 
4
)(OH,O)
 
6
20.3.17Chlorophoenicite
(Mn,Mg)
 
3
Zn
 
2
(AsO
 
4
)(OH,O)
 
6
20.3.18Lotharmeyerite
Ca(Zn,Mn
3+
 
)
 
2
[AsO
 
4
]
 
2
 · 2(H
 
2
O,OH)
20.3.19Metaköttigite
(Zn,Fe,Fe)
 
3
(AsO
 
4
)
 
2
·8(H
 
2
O,OH)
20.3.20Ojuelaite
ZnFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
20.3.21Fahleite
Zn
 
5
CaFe
 
2
(AsO
 
4
)
 
6
·14H
 
2
O
20.3.22Keyite
(Cu,Zn,Cd)
 
3
(AsO
 
4
)
 
2
Related Minerals - Dana Grouping):
38.2.7.2Johillerite
Na(Mg,Zn)
 
3
Cu[AsO
 
4
]
 
3
38.2.7.3Nickenichite
Na
 
0.8
Ca
 
0.4
Cu
 
0.4
(Mg,Fe)
 
3
(AsO
 
4
)
 
3
38.2.7.5Yazganite
NaFe
3+
2
(Mg,Mn
2+
 
)[AsO
 
4
]
 
3
 · H
 
2
O

Other Names for O'Danielite

Synonyms:
IMA1979-040
German names:
O'Danielit
Russian names:
Оданиелит
Spanish names:
O'Danielita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for O'Danielite

Reference List:American Mineralogist (1981): 66: 218-219, 1276.

Keller P. and Hess, H. (1988): Die Kristallstrukturen von O'Danielit, Na(Zn,Mg)3H2(AsO4)3 und Johillerit, Na(Mg,Zn)3Cu(AsO4)3. Neues Jahrbuch fuer Mineralogie Monatshefte 1988, 395-404. (in German)

Internet Links for O'Danielite

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    Localities for O'Danielite

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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		[Neues Jahrb.Min.,Mh.(1981) 155-160; Clark, 1993 - "Hey's Mineral Index"]
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